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3 years ago

Which of the following is the measure of ÐQRS? A. 115° B. 90° C. 100° D. 80°

Mathematics

2 answers:

choli [55]3 years ago

8 0

Unless you are talking about the triangle thing, then its 90°.

nasty-shy [4]3 years ago

3 0

90 degree's (B) I hope that this helps.

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Leons older brother is 4 and 3/4 feet tall. Leon is 1/3 foot shorter than his brother .how tall is leon

Mandarinka [93]

Let

x------> height of Leon's older brother

y------> height of Leon

Convert mixed number to an improper fraction

$4\frac{3}{4}\ ft=\frac{4*4+3}{4}= \frac{19}{4}\ ft$

we know that

$x=\frac{19}{4}\ ft$ -----> equation A

$y=x-\frac{1}{3}$ -----> equation B

substitute equation A in equation B

$y=\frac{19}{4}-\frac{1}{3}=\frac{53}{12}\ ft$

Convert to mixed number

$\frac{53}{12}=\frac{48}{12}+\frac{5}{12}=4\frac{5}{12}\ ft$

therefore

the answer is

$4\frac{5}{12}\ ft$

6 0

2 years ago

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Evaluate the expression when x=14 and y=12.

mina [271]

Answer: 348

Step-by-step explanation:

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2 years ago

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Please help badly!!!!!!! I am failing and it is a very important test PLEASE PLEASE PLEASE

lakkis [162]

Circumference=2*pi*r or pi*d so if its 16pi you know that your diameter is 16 wich means your radius is 8 because d/2 is your radius. plug the 8 into the area formula wich gives you the formula pi*8^2. 8squared is 64. 64 times pi is 201. or 64pi wich is the area of the same circle with the circumfernce of 16pi

8 0

3 years ago

Find the difference of 18.6 and 5.24.*

Charra [1.4K]

Answer:

13.36

Step-by-step explanation:

18.60 - 5.24

=>13.36

5 0

3 years ago

Lillian and Jacob work at a dry cleaners ironing shirts. Lillian can iron 25 shirts per hour, and Jacob can iron 20 shirts per h

vladimir1956 [14]

Answer:

Lillian worked 7h and Jacob worked 6h

Step-by-step explanation:

the number of hours Lillian worked are x (h)

the number of hours Jacob worked are y (h)

(0 < x,y < 13)

=> Lilian ironed: 25x (shirts)

Jacob ỉroned: 20y (shirts)

because Lillian and Jacob worked a combined 13 hours and ironed 295 shirts, we have:

$\left \{ {{x+y=13} \atop {25x+20y=295}} \right. => \left \{ {{x=7} \atop {y=6}} \right.$

so Lillian worked 7h and Jacob worked 6h

8 0

2 years ago